When a plastic running track requires renovation, it's usually due to two main reasons. The first is that the track has reached the end of its service life and can no longer provide safe and effective use for athletes or users. Continuing to use it could pose risks to health and safety. The second reason is damage caused by improper usage, such as heavy impacts, accidental cuts from sharp objects, or burns from cigarette butts.
**Steps for Plastic Track Renovation**
The process of renovating a plastic track involves several key stages, starting with an on-site inspection by technical or construction personnel. Depending on the extent of the damage, simple resurfacing may be sufficient, or in more severe cases, the original base may need to be restored.
**1. Site Cleaning**
Before any work begins, the area must be thoroughly cleaned to ensure proper adhesion of the new surface layer. This includes:
- Removing dirt using a broom and hair dryer.
- Eliminating protrusions with a spatula.
- Flushing the ground with high-pressure water.
- Clearing surrounding debris, such as fallen leaves, and ensuring the area is free from wind-blown materials.
- Closing off the construction site to prevent unnecessary foot traffic.
**2. Repair Work**
This step involves inspecting the entire surface for issues like peeling, sand return, or cracks. Special tools are used to remove damaged layers, and the base is sealed with a single-component plastic compound. The mixture is applied using brushes or scrapers and left to dry.
- Mixing should be done on a clean surface to avoid contamination.
- The mixing tank should be 1.5–2 times the volume of the material being mixed.
- One-component adhesive is poured first, followed by black rubber particles.
- Mixing time varies depending on temperature and humidity—typically around 3.5 minutes at 25°C and 70% humidity.
- All materials must be measured accurately, and water should be avoided during mixing.
- A detailed record of each batch is kept for quality control.
**3. Full Back Cover**
After cleaning, warning signs are placed to keep unauthorized people away. Protective measures are taken for nearby sports facilities. Raw materials are prepared and mixed, then sprayed onto the surface using a sprayer.
**4. Surface Preparation**
This stage includes setting up the work area, ensuring access to power and materials, and checking all tools and equipment. The ground must be flat and solid, with proper protection against pollution.
**5. Surface Coating**
EPDM powder, fine material, and surface adhesive are transported to the site. The materials are mixed and sprayed using a specialized sprayer. The spray gun is adjusted to maintain a consistent angle and thickness of at least 1.5mm per coat. Operators must work in coordination to ensure even coverage.
**6. Marking and Positioning**
The original center points and marking lines are rechecked. The surface is cleaned again, and markings are applied according to IAAF standards. White lines are painted using polyurethane-based paint, ensuring clarity and precision.
**7. Completion and Handover**
Before leaving the site, the finished track is protected to prevent damage. A manual is provided to the client, detailing maintenance and care instructions. The renovated track is ready for use after 7–10 days.
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